You can't compare the wattage on a BFL with an Avalon. An Avalon is a self-contained mining device. Add in the wattage for the laptop and the BFL is less efficient than an Avalon! ROFLMAO.
You are probably wrong in a couple of asumptions. For starters you can use something smaller than a laptop, eg. a Raspberry Pi. Secondly you only need the one to talk to the 5GHs, 25GHs, or 50Ghs products, at the high end power consumption the controlling computer becomes insignificant.
I understand you are just trolling the BFL products, I don't have a problem with that, to a certain extent they deserve it, I am just pointing out the misinformation for actual people reading the thread that might have bought the product.